Title:
DRIVE CIRCUIT FOR MOTOR
Document Type and Number:
Japanese Patent JPH06225593
Kind Code:
A
Abstract:
PURPOSE: To obtain a stable low noise effect in a drive circuit for a motor to drive a stepping motor, etc.
CONSTITUTION: In order to generate a trapezoidal wave pulse for driving a motor from a trapezoidal wave generator 11, an F/V converter 24 generates a comparison voltage responsive to a clock signal, compares it with threshold voltages, and varies a current for generating the pulse in response to a signal of a comparison result. The pulse is generated from the current and a phase- excited pulse to be sent from phase-excited pulse generating means 22 through a rotting direction switching circuit 23.
Inventors:
TAJIMA OSAMU
SAKAI MINORU
SAKAI MINORU
Application Number:
JP1016693A
Publication Date:
August 12, 1994
Filing Date:
January 25, 1993
Export Citation:
Assignee:
MITSUMI ELECTRIC CO LTD
International Classes:
H02P8/10; H02P8/00; (IPC1-7): H02P8/00
Attorney, Agent or Firm:
Tadahiko Ito